Wi-Fi signals can identify you through walls and even track your movements
It’s fair to say that Wi-Fi has become a pretty indispensable part of modern-day life, but it seems the technology can do a heck of a lot more than just stream data to and from our digital devices. Researchers in the US have developed a system called RF Capture that uses wireless signals to detect and track human motion throughout a building, even when people are behind walls or furniture, or are in rooms at the opposite end of the building. In a paper that will be presented at the SIGGRAPH Asia 2015 conference next month, researchers from the Massachusetts Institut